A young woman named Miriam (Dani Lennon) works for a non-profit which promotes global peace initiatives. This is in reaction to her estranged father — sociopath US war profiteer and billionaire Cyrus DeKalb (Ray Wise). When he learns he is dying, Cyrus calls Miriam and her three siblings together, ostensibly to discuss his will. However, what he actually has planned is to pronounce judgement on them all. They are, in his view, traitors; and he has elaborate death traps planned for each of them.

The wrinkle is: A race of intergalactic gamblers, who wager on human conflicts as bloody sport, have chosen Miriam as their protagonist for this match. Thus, the entire situation is being manipulated by the Gamemaster (Morena Baccarin), who has the power to call fouls, reverse time, and reconfigure events as they play out. And so the playing field is constantly changing under Miriam’s feet — sometimes to her benefit, but usually not.

Lewis Coleman is a lone sheriff tasked with watching over the vast lands and valleys of Brada County. When an environmental aberration stirs the town, and reports begin to come in regarding a mysterious animal roaming the surrounding farmlands, the mayor of the small community of Sombra Hollow insists on bringing in an Sara Keegan, an environmental expert and zoologist, to advise them.

As this situation worsens, the sheriff’s two children, Tanya and Carey, become more curious of the situation surrounding the town. When a local couple disappears from a county football game, Lewis and Sara race to discover the mystery of the animal that stalks the countryside, before more towns folk, and possibly Lewis’ children, venture further into harm’s way.